Abstract: An aspect of embodiments of the invention is to lower fluid resistance applied to gas flow (A, S) flowing within a dust collection system (1) so as to enhance dust collection efficiency of the dust collection system (1) without depending on the number or the two dimensional arrangement of movable elements (40) within the system (1). Embodiments of the dust collection system (1) of the invention includes: a housing (10) defining a cavity (50) therewithin, the housing (10) having a plurality of inlets (53) and at least one outlet (57) for gas; a plurality of movable elements (40) for opening and closing the inlets (53), the movable elements (40) being respectively provided corresponding to each of the inlets (53); a gas flow generating device (20) for generating a gas flow (A, S) from each of the inlets (53) to the outlet (57) during the opening operation of the movable elements (40); and a flow path control device (13) for controlling the flow paths of the gas flow (A, S).

Abstract: An aspect of embodiments of the invention is to lower fluid resistance applied to gas flow (A, S) flowing within a dust collection system (1) so as to enhance dust collection efficiency of the dust collection system (1) without depending on the number or the two dimensional arrangement of movable elements (40) within the system (1). Embodiments of the dust collection system (1) of the invention includes: a housing (10) defining a cavity (50) therewithin, the housing (10) having a plurality of inlets (53) and at least one outlet (57) for gas; a plurality of movable elements (40) for opening and closing the inlets (53), the movable elements (40) being respectively provided corresponding to each of the inlets (53); a gas flow generating device (20) for generating a gas flow (A, S) from each of the inlets (53) to the outlet (57) during the opening operation of the movable elements (40); and a flow path control device (13) for controlling the flow paths of the gas flow (A, S).

Abstract: The paper feeding device for a box making machine eliminates the intermittent paper feeding which gives rise to operational defects. The device operates continuously at a low speed to match the speed of feeding a quantity of paper with a timing correcting conveyor and increases the paper fed in the foregoing with the drawing belt conveyor in order to supply the paper to the timing correcting conveyor. Furthermore, the device detects the paper passing the shutter on the paper feeding belt conveyor and stops the paper feeding belt conveyor temporarily when the paper happens to be mounted on the pawl of the timing correcting conveyor. The feeding of the paper starts again after a time lapse so that the paper is positively mounted between the pawls.